boot/bootmeth_sandbox.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Bootmethod for sandbox testing
   4  *
   5  * Copyright 2021 Google LLC
   6  * Written by Simon Glass <sjg@chromium.org>
   7  */
   8
   9 #define LOG_CATEGORY UCLASS_BOOTSTD
  10
  11 #include <common.h>
  12 #include <bootdev.h>
  13 #include <bootflow.h>
  14 #include <bootmeth.h>
  15 #include <dm.h>
  16
  17 static int sandbox_check(struct udevice *dev, struct bootflow_iter *iter)
  18 {
  19         return 0;
  20 }
  21
  22 static int sandbox_read_bootflow(struct udevice *dev, struct bootflow *bflow)
  23 {
  24         /* pretend we are ready */
  25         bflow->state = BOOTFLOWST_READY;
  26
  27         return 0;
  28 }
  29
  30 static int sandbox_read_file(struct udevice *dev, struct bootflow *bflow,
  31                              const char *file_path, ulong addr, ulong *sizep)
  32 {
  33         return -ENOSYS;
  34 }
  35
  36 static int sandbox_boot(struct udevice *dev, struct bootflow *bflow)
  37 {
  38         /* always fail: see bootflow_iter_disable() */
  39         return -ENOTSUPP;
  40 }
  41
  42 static int sandbox_bootmeth_bind(struct udevice *dev)
  43 {
  44         struct bootmeth_uc_plat *plat = dev_get_uclass_plat(dev);
  45
  46         plat->desc = "Sandbox boot for testing";
  47
  48         return 0;
  49 }
  50
  51 static struct bootmeth_ops sandbox_bootmeth_ops = {
  52         .check          = sandbox_check,
  53         .read_bootflow  = sandbox_read_bootflow,
  54         .read_file      = sandbox_read_file,
  55         .boot           = sandbox_boot,
  56 };
  57
  58 static const struct udevice_id sandbox_bootmeth_ids[] = {
  59         { .compatible = "u-boot,sandbox-extlinux" },
  60         { }
  61 };
  62
  63 U_BOOT_DRIVER(bootmeth_sandbox) = {
  64         .name           = "bootmeth_sandbox",
  65         .id             = UCLASS_BOOTMETH,
  66         .of_match       = sandbox_bootmeth_ids,
  67         .ops            = &sandbox_bootmeth_ops,
  68         .bind           = sandbox_bootmeth_bind,
  69 };